Rec.2020 & HDR

Hi B,

I’ve played around with two separate projects and have a question. Both image go very blown out and super saturated once I run through the CVars you mentioned and activate HDR output. The first project I had tweaked before hand to purposefully blow out the dynamic range so it would, in theory, map into an extended dynamic range nicer than if I had kept things tone mapped to below 1.0 but once I tried my second scene I’ve found similar results.

Do I need to prepare the Post Process Volume to do anything specific for HDR or should I make it ‘nice’ in the regular mode and the HDR output will transform things up into shape ? Just not sure if I need to compensate for the transform, or what the transform is doing. I feel that UE4 has a natural and fairly heavy tonemapper by default (that has changed a bit in 4.15) but could you advise further ?

Also did you find the missing documentation anywhere ? (so I don’t have to bother you)

Thanks!

Matt Hermans